When I run Theme Check(http://wordpress.org/plugins/theme-check/) on my WP theme on my localhost. Where can I search for the issue? Can it be that it's just too much code and it needs more time to execute or should it execute in 30 seconds no matter how much code I have? I do have some complex files(5000+ code).
If this could be an issue solved in theme code, please point out on what should I focus.